Fact check doesn't like ivermectin
(web.archive.org)
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viruses are as small as air molecules so if you can still breath with a mask you also breath in viruses. it might stop you from catching bacteria but that's not what covid was
N2 has a molecular weight of 28 u. Infulenza has a molecular weight of around 3.9 x 10^6 u. You are 5 orders of magnitude off.
N2 has an effective diameter of around 364 pm. Influenza has a diameter of somewhere between 10,000 pm and 120,000 pm.
The problem isn't that viruses are close to the size of air molecules, because that is flat out false. The problem is that they are much smaller (0.12 μm) than the PM 2.5 standard (2.5 μm) that masks are rated by.
fake news